硫碳氮共渗表面抗蚀性讨论  

Study on Atmosphere Corrosion Resistance of Sulphocarbonitriding Steel Surface

作　　者：徐蓉生[1] 

机构地区：[1]四川建筑机械厂,成都610081

出　　处：《金属热处理》1999年第12期43-45,共3页Heat Treatment of Metals

摘　　要：通过热力学计算建立ＥｐＨ 平衡图，求得电极平衡电位，并实测得到腐蚀电位。在此基础上研究了在水溶液介质中，钢中αＦｅ、Ｆｅ３Ｃ、ＦｅＳ、Ｆｅ２Ｎ、Ｆｅ４Ｎ等相的腐蚀倾向。结果指出硫碳氮共渗钢表面存在高平衡电位相ＦｅＳ、ε（Ｆｅ３－２ Ｎ） ，使它具有良好的抗大气腐蚀性。In this paper,by means ofcalculation ofthermodynamics data,E pHequilibrium diagrams were plotted and equilibrium potentialsofelectrochmicalreactions were obtained.Practicalcorrosion potentialsfor surfaces were also measured.On the above men tioned basisthecharacterizationsforthe watersolution corrosion ofα Fe、Fe3C、FeS、Fe2N、Fe4Nphase etc were studied.Itis denoted that whensulphidizingsteelsurfacespossesshigh equilibrium potentialphase FeS、ε(Fe3-2N),they have good atmospherecorrosion re sistance.

关 键 词：硫碳氮共渗 抗蚀性 腐蚀 大气腐蚀 

分 类 号：TG156.8[金属学及工艺—热处理]